Initial commit: VMware vSphere API simulator scaffold.

Add the FastAPI app, PostgreSQL migrations, Docker/Helm packaging, API
contracts, docs, client examples, and the unit/integration/compatibility
test suite for local client and tooling labs without a real vCenter.

app/web/static/vmware-mark.svg

@@ -0,0 +1,14 @@
+<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 64 64" fill="none">
+  <defs>
+    <linearGradient id="vmGreen" x1="8" y1="6" x2="56" y2="58" gradientUnits="userSpaceOnUse">
+      <stop offset="0" stop-color="#C4F07E"/>
+      <stop offset="1" stop-color="#7CB84A"/>
+    </linearGradient>
+  </defs>
+  <g stroke="url(#vmGreen)" stroke-width="6.5" stroke-linejoin="round">
+    <rect x="6.25" y="6.25" width="33.5" height="33.5" rx="8"/>
+    <rect x="24.25" y="24.25" width="33.5" height="33.5" rx="8"/>
+  </g>
+  <rect x="15" y="15" width="13.5" height="13.5" rx="3" fill="#F7E56A"/>
+  <rect x="35.5" y="35.5" width="13.5" height="13.5" rx="3" fill="#F7E56A"/>
+</svg>